数组方法concat
时间: 2023-12-06 07:05:08 浏览: 43
数组方法concat()是用于连接两个或多个数组,并返回一个新的数组。当没有传递参数时,concat()方法只是复制当前数组并返回副本。如果传递的是一个或多个数组,则该方法会将这些数组中的每一项都添加到结果数组中。如果传递的值不是数组,这些值会被简单地添加到数组的末尾。
例如,如果我们有三个数组mya1、mya2和mya3,分别包含了不同的字符串元素,我们可以使用concat()方法将它们连接起来,代码如下:
```
var mya1 = new Array("hello!");
var mya2 = new Array("I", "love");
var mya3 = new Array("JavaScript", "!");
var mya4 = mya1.concat(mya2, mya3);
document.write(mya4);
```
运行结果将是"hello!", "I", "love", "JavaScript", "!"。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [数组连接concat()](https://blog.csdn.net/qq_24193261/article/details/52604273)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [JS数组方法concat()用法实例分析](https://download.csdn.net/download/weixin_38593644/13135747)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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